Difference between student exchange program and study abroad?

I want to know about the difference between student exchange programs and studying abroad

The main difference between an exchange program and a study abroad program is that exchange students do not pay tuition fees to the exchange institution, whereas study abroad students pay tuition fees to the host university. suppose you are a current student of the University of Adelaide and participate in an exchange program. In that case, you remain enrolled at the University of Adelaide for the duration of the exchange, and standard University of Adelaide tuition fees apply. Study abroad students do not enrol at the University of Adelaide for the course of their time overseas and therefore do not accrue HECS or tuition fees at the University of Adelaide. Instead, you will pay tuition fees directly to the host institution as a full-fee-paying international student. Information about the cost of studying abroad usually is available on the host university's website.